Electric iron and stand



Ap -l4, 1925. 1,533,116 vv; G. JENSEN I ELECTRIC lIRON AND STAND Filed Nov. a, 1923 f2 shuts-sheet 2 'Patented Apr. 14, 1925.

UNITED STATES 1,533,116 PATENT oFFlcE.

VICTOR G. JENSEN, OF CHICAGO, ILLINOIS, AS SIGNOR TO C. H. D..ELECTRIC COM. i

PANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

' E Lnc'rmc IRoN Nn STAND.

- Application filed November 8,1923. Serial No 673,569.

To all ywhom it may concern.'

Be it known that I, VICTOR G. JENSEN, a citizen of 'the United States, and resident of Chicago, county of Cook, State of Illinois, have invented certain new and useful Improvements in Electric Irons and Stands, of which the following is a specification.

This invention relates to .'electrical sadirons or the like and especially to an automatic electric switch stand for heatingv such irons. More particularly the-invention aims to provide a heating stand which is simple in construction having electrical switches actuated by. the weight of the viron to close a circuit through the iron when the same is placed on the stand and operated by gravity to break the circuit when the iron is lifted from the stand. The invention further aims to provide a mechanism of this kind in which the movable switch elements are made strong and durable and easy to manufacture, re quiring little or no machine work or skilled labor, thus greatly simplifying and cheapening production. The foregoing a d otheradvantages of the invention will be apparent from the construction hereinafter described and which is illustrated in the acdrawings forming part of this contact plugs in the iron;

Figul'eft is a longitudinal section substan-l tially on the -line 4 4 of Figure 1, this view showing parts of the iron and parts of the "stand in section;

Figure 5 is avperspective view of one of the gravity actuated -switch elements used in the stand Figure 6 isa detailed sectional` view'on the 1ine6-,6 of Figure 2;

Figure 7 is a sectional view on the line 7--.7A in Figure 3 showing further details of the means for fastening the contact plugs intheiron;v v

' Figure 8 is a dia ammatic view showing the 'contacts and t e circuits through the stand andthe iron placed thereon.

.the handle to the iron.

. projections 15a.

In the accompanying drawing 10 indicates the iron itself, certain. feature-s of which will Lbe briefly described. It comprises a heavy lower plate 10a and a heavy upper plate 10b between which the electrical heating element properly insulated is placed, these plates. being held together by bolts such as 10c. The coverv or shell 10d of the iron is secured to said plates by screws 10 which engage threaded ,openingsin said bolts, these screws serving also' to secure The ends of the heating element of the iron are connected to contact plugs 11 which project rearwardly from the heel of the iron. These plugs are rigidly held in place between two transverse plates 10, 10g, the meeting. faces of which are cut out to receive theplugs which are surrounded by suitablt` insulated material. The plates 10f, 10g, are rigidly secured by suitable screws 10h in a recess formed in the rear ends of the plates 10, 10". A guard late 12 is attached to the shell of the iron a ove the plugs ,11 for the purpose hereinafter pointed out.

The heat-ing stand, 'designated generallyby the numeral 13, is preferably made double to hold two irons as shown in Figure 1 but it may of course be made single if desired. A casing 14 is secured to the rear edge of the stand in any suitable manner and in this casing theelectrical mechanism of the stand is arranged. The casing has a cover plate 14a enclosing the rear thereof. The electrical mechanism is the same for both sides of the stand and a description of one will apply to both. A block 15, preferably formed of insulating material, is placed 1n the casin 14. lThis block has a central portion whi projects upwardly from the bot# tom of the casing and the upper corners of the same is provided with rounded lugs or On eachy side yof this central portion the block 15, is cut away as at 15b to form recesses to receive the movable switch members hereinafter described.- The end war ly toward the top of the casing 14, being overlaid by two short blocks or strlps 416 of insulating materialY The b lock 15 1sv arranged' between two strips ofmsulatmg ortion 15 of the block 15 extends up- 1 material 17 and 18 placedwithin the casing `14. 1 The'mechanism- Vfor completmg the cni- 'cuit 'through the heating element of the the cont-acts 21 on both sides.

iron includes two. mbvable switch members or hammers 20 and suitable stationary contacts 21. The movable switchmembers 20 are so formed as to hook over and be supported upon the curved lugs 15a of the block 15, each of such members 20 near the end having a curved seat20n which isadapted to fit over said lugs 15a. The upper end of each of the switch members 20 is provided on its upper "face with a curved surface 20b which form seats for receiving the plugs 11 of the iron and at its lower end each of the members 20 is provided on its upper face with inclined cont-act surfaces 20c which are adaptedf to cooperate^with spring arms 21a of the contacts 21 thesey latter contacts being rigidly secured-to the blocks 16 of insulating material.

As will be noted the lower ends of the switch members or hammers 20 are made heavy or massive so that they will normally lie in the position indicated at the right in Figure 2 and free from thecontacts 21. It will be understood that the stationary contacts 21 at the` opposite ends of the block 15 are connected to the two terminals of an electric circuit. Thus the inner contact 21 'is connected to the terminal 23 by means of a conductor '24 and the outer contact is connected to the terminal 25 by means of a conductor 26. These conductors are preferably mounted in grooves in the block 15 and insulated from the surrounding metallic parts of the casing.'

The top portion of the casing is cut away to form two openings 14h direct-ly above the upper ends "of the switchamembers 20, these `openings'permitting the plugs 11 of the iron to be easilyu placed on the seats 20?/ of said members. The guard plate 12 of the iron isl so positioned that vit will lie above the openings 14h when the iron is placed on the stand thus prevent-ing accidental access to the plugs'll or the switch members 20 when the iron is on the-stand and current flowing therethrou h.

Briefly escribing the operation of the de-'I vice, when the iron is placed on the stand in proper position the plugs 11 will rest on the upper ends of the'switc'h members 20 and the weight of the iron will move said members about their points of support bringing the surfaces 20"IV thereof into engagement with Currentl will then How through the heating element 7of the iron and at such time the guard plate 12 will cover the openings 14h so that accessfto the plus 11 or switch members 20 will be impossi le. When the iron is lifted from the stand the lower ends of the switch members 20 will drop by gravity Iout of engagement withV the' contacts 21, thus automatically -breaking 4the circuit. l

It. will be apparent that the switch members or hammer20 are'of such shape that they may be easily madeby casting, thus avoiding expensive machine operation andl skillful workmanship. Furthermore, these members are of such size as to be strong and durable so that they will not be broken by accidental falling of the iron on the same tween the'se members and the stationary.

contacts 21. Likewise in removing the iron from the stand the circuit will first b broken between the switch members 20 an the contacts 21. The result is that any arcing' that occurs will .take place between the contacts 21 and the switch members 20 but the shape and size of these members is such that the arcing will have no injurious efect.

Various modifications'may of course be made in the details of the construction without departing from the spirit of the invention which is not limited to the particular embodiment herein described.

Having thus described the invention what is claimed as new and desired-to be secured by Letters Patent is:

l; In combination with a sad iron or the like having a contact plug thereon, a heat- `ing stand therefor, a stationary contact in placed on the stand, whereby said member is moved about its pivotal support, said member yhaving at its other end a part adapted to engage said stationary contact when the member `is moved by the weight of the iron, the last named end of said member nbeing weighted to cause the same to drop b y gravity out of engagement with said stationary contact when the iron is removed .ffrom` the stand.

, 2. A heating stand for electric irons or the type having a heating element 4therein and a contact plug connected to said element, said stand having a stationary electric contact mounted thereon, and means for ompleting an electric-circuit between said .station-v ary contact and the contact plug on the iron when the lron is placed on the stand, said means comprising a rigid switch member pivotally supported intermediate its ends on 'av stationary part of said stand, said switch member having at one end a part adapted to engage with the contact plug on Lthe iron and receive the weight of the iron placed on the stand, whereby said switch member is moved about its pivotal support, said switch'me'mber having at the other'cnda part adapted to engage said stationary contact when the switch member'is moved by the weight of the iron, the last named end of said switcili inembe'r being weighted to cause the same to. dropby gravity out of engagement with said. stationary contact when the iron is -re-.

moved from the stand.' l

lIn combination with an electric sad f iron or the like having an electric contact plug thereon, a heating stand for the same, a stationary electric contact on said. stand, means for completingy the 'circuit between said stationary contact and the plug oii the iron when rthe iron is placed on the e sta-nd, said means comprising Aa switch member is moved by the weight of the iron, the

last named end of said i member being weighted whereby the same is disengaged by gravity from said stationary contact when the iron is removed from `the stand.

t.4 In. combination with Ian electric sad iron or the like having an electric Contact plug thereon, a heatingy standtherefoigsaid stand having a stationary electric contact thereon, means for completing a circuit betweensaid plug and stationary contact when the iron isplaced on the stand, said means comprising a rigid switch member pivotally sup-ported. intermediate its ends on a stationary-part of said stand, said member having on oneA end a seat forreceiving saidplug when the iron is placed on the stand and'on its other end a. part adapted to engage said stationary contact, the .l last named send of .said member being weighted to cause the same to be automatically disengaged from said' static-nary contact.

5.1m combination with" an .electric sad iron br the like haying two electric plugs thereon, a heating stand for the same, said' vstand having two stationary electric con tac-ts thereon lforming the terminals of an electric circuit, means for* electrically con'- .necting said contacts and plugs when an iron is placed on the stand, said means comprising two independently movablel switch ,membe-rs, each' pivotally supported intermediate its'ends on a stationary partv of said stand, each of said members having a seat on one end upon which one -of said plugs is adapted to rest,I said members, being movable about their points of support by the weight of the iron when saidl plugs rest upon said seats, each `of `said members having Aon its other end apart adapted to'engage one of said stationary contacts, ,when said. members are moved by the weight ofA the iron, the last named ends of said members being weighted to cause the saine to drop by gravity out. ofengagement with said stationary contacts when the iron is removed from the stand.

6. In combination with an electric sad ironor the like. having a heating element and two contact plugs connected therewith, a heating stand therefor having two staltionary electrical terminals thereon, means for electrically connecting said terminals with said plu s'wlien the iron is placed on the stand," sai means comprising two independent switch members each pivotally supported intermediate its ends on a stationy ary part of said stand, said` switch members having seats ,adapted to engage said plugs and receive the weight of the iron, said members 'being movable about their points of. support by the weight of the iron when placed on the stand, said switch members also having surfaces adapted to engage said stationary terminals. when the same are'- inoved by the weight of the iron, said inem- 'bers being weighted to cause the same to drop by gravity out of engagement with said l terminals when the iron is removed from the stand. Y

7. In a heating, stand .fori elect-ric sad irons orthe like, a casing secured to said stand, two stationary electric contacts in said casing, two independent switch members adapted-to be brought into engagement with said contacts, each of said members being pivotally supported intermediate its length on a stationary partof said stand, each ot: said members having a seat on one end thereof and a surface on the other end, said surfaces being arranged to engage saidstationary contacts when said members are moved -about their points of pivotal sup,

two stationary electric contacts in said cas-V ing, two independent movable switch members arranged between said contacts, each of said switch members being pivotally snpported intermediate its ends on a stationary part of said stand,each ofV said switch members having one end arranged to engage one of said contacts-when 'pressure' is applied to the other, end thereof,the first named end of eachl of said members being `weighted wherebu the same will automatically vdrop out o en agement with the stationary contact when t e pressure on the other end is removed.-

9.- In a heating 4stand for electric irons or engagement with the like, a casingsc'ured to said stand, a switch supporting block in saidcasing, a stationary electrical contact on each side of said block, two independent switch members pivotally supported intermediate their ends on saidvblock, each of said switchv members having one end thereof arranged to engage one ofx'said contacts when pressure is applied to the other end, the rst named end of each of saidmembers being weighted whereby the same will automatically drop out of the stationary contact when the pressure on the other end is removed.

10. In combination with an electric iron having two contact plugs thereon, a heating stand, a casing secured to said stand and having openings into whichsaid plugs may be inserted, two lstationary electrical contacts in said casing, two movable Fswitch members in said casing, each of said members being pivotally supported intermediate its ends on aystationary part of said casing, said members having their ,upper ends*l arranged adjacent said openings, and in position to be engaged by said plugs when an iron is placed on the stand, the lower ends of said members being arranged to move into engagement with said stationaryl contacts when pressureis applied to the rupper ends thereof, the lower ends of said members being weighted to cause the same to move by gravity out of engagement with said stationary contacts.

1l. In combination, an electric sad iron having two contact plugs projecting therefrom, a guard ,plate arranged above said plugs, a heating stand for said iron, a casing secured to said stand and having openings V.to receive said plugs, said guard plate be- `ing positioned to cover said openlngs when the iron is placed on the stand, and means in said casing for automatically connecting said plugs to the terminals of an electric circuit when the ironJ is placed on the stand..

12. In combination with an electric sad iron having two contact plugs,` a heating` stand therefor, -two independent pivotally Vsupported switch members on. said stand said members having their upper ends positioned to be engaged by said plugs when the iron'is placed on the stand, said members being movable about their points of sup ort by the weight of the iron when place on the upper ends thereof, stationary contacts 4on said stand adapted to be engaged by the -lower ends of said members when the same are moved by the weight of the iron, the lower ends 'of said members being weighted to cause automatic disengagement of the same from said contacts.

13. A heating stand for electric irons of the type having a heating element therein and a. contact plug connected to said element said stand having a stationary electric contact mounted thereon, and means for com pleting an electric circuit between said stationary contact and the contact plug on the iron when theiron is placed on the stand, said means comprising a rigid switch member pivotally supported intermediate its ends on a ,stationary part of said stand, said switch member having at one end a part adapted to engage with the contactplug on the iron and receive the weight of the iron placed on the stand, whereby said switch. member is moved about its pivotal support, said switch member having at the other end a. part adapted td engage said stationary contact when thev switch member is moved by the weight of the iron, and means for automatically causing said switch member to be disengaged from said stationary contact when lthe iron is removed from the stand.

14. A' heating stand for .electric irons of the type having a heating element therein and two contact plugs connected to said element, said stand having two stationary electric contacts mounted thereon, and means for completing an electric circuit between said members, having at one end a part adapted to engage with one of the contact plugs of the iron and receive the weight of the iron placed onthe stand, whereby said switch members are moved about their'pivotal points of support, each of said switch members having at its other end'a part adapted to engage one of said stationary contacts when such members are moved by the weight` of an iron placed on the stan, and means for automatically causing said switch members to be disengaged from'said stationary contacts when the iron is removed from the stand.

In testimony .whereof I hereunto ailix my signature. I

VICTOR G. JENSEN. p 

